Message 188628 - Python tracker

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Author	ezio.melotti
Recipients	ezio.melotti, kushal.das, nedbat, neologix, pitrou, trent, vstinner
Date	2013-05-07.07:28:13
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<[email protected]>
In-reply-to

Content
Returning None sounds reasonable to me. Raising an exception pretty much means that the function should always be called in a try/except (unless you are sure that the code is running on an OS that knows the number of CPUs). Returning -1 is not very Pythonic, and between 0 and None I prefer the latter, since it's IMHO a clearer indication that the value couldn't be determined.

Returning None sounds reasonable to me.
Raising an exception pretty much means that the function should always be called in a try/except (unless you are sure that the code is running on an OS that knows the number of CPUs).  Returning -1 is not very Pythonic, and between 0 and None I prefer the latter, since it's IMHO a clearer indication that the value couldn't be determined.

History
Date	User	Action	Args
2013-05-07 07:28:13	ezio.melotti	set	recipients: + ezio.melotti, pitrou, vstinner, nedbat, trent, neologix, kushal.das
2013-05-07 07:28:13	ezio.melotti	set	messageid: <[email protected]>
2013-05-07 07:28:13	ezio.melotti	link	issue17914 messages
2013-05-07 07:28:13	ezio.melotti	create